Process for direct nickeling of aluminium or alloys containing aluminium.



No Drawing.

rINi'TEn STATES PATENT OFFICE.

MARC CHIRADE AND JOSEPH CANAC, OF PARIS, FRANCE.

PROCESS FOR DIRECT NICKELING OF AIlUMINIUM 0R ALLOYS CONTAININGALUMINIUM.

1,030,972, Specification of Letters Patent.

Patented July 2, 1912.

Application filed November 6, 1911. Serial No, 658,734.

To all whom it may concern:

Be it known that we, MARC CHIRADE and JosErH OA'NAo, engineers, citizensof the- French Republic, residing in Paris, France, with post-officeaddress care of J. P. Bonnicart, 16 Place de la Rpublique, Paris,

France,. have invented 'a new and useful Process for, Direct Nickelingof Aluminium or Alloys Containing Aluminium, of which thefollowing is aspecification.

The invention relates to improvements in processes of direct aluminiumnickeling.

The object of the invention is to enable any article of pure aluminiumor alloy containing same, to be nickeled directly. This object isattained by the following process:

1. Immerse the article to be nickeled'in tepidwater, next Wash it inordinary water containing 2 per cent. of cyanid of potassiu The articleis left about 30'seconds in t elatter composition and then Washed withvery clean water. 2. Immerse the article, after the above treatment, inthe following composition: hydrocholoric acid 1} liter, distilled waterliter, chlorid of iron, 1 gram.

3. Wash the article inclean water and immerse in nickel bath byfurnishing an electrical current of three volts; after: five minutes,again wash in boiling water, prefer dry by any convenient iron andfinally placing it in a nickel bath under electrical current of threevolts, all substantially asset forth.

MARC GHIRADE. JOSEPH CANAC.

Witnesses:

JEAN PAUL BONNICART, DEAN B. MASON.

